Figure 3-2. Selecting Interrupt Level - Adaptec AHA-2740 User Manual

AHA-2740 Series User's Manual
The IRQ cannot be shared with ISA mode SCSI host adapters
such as the Adaptec AHA-1540 and AHA-1520 Series adapters.
If those adapters are installed in your EISA system, they must
be assigned unique IRQs.
Interrupt Level
Done=F10 <Edit Resources=F6>

Figure 3-2. Selecting Interrupt Level

Bus Release Time
Select Bus Release Time to configure the amount of time, in
BCLKS (Bus Clocks), the host adapter will continue to transfer
data after being pre-empted in bus master mode. Figure 3-3
displays your choices. The default setting is 60 BCLKS.
Normally 60 BCLKS is optimum; however, if multiple bus master
cards are installed in the system, you may want to lower the
value to free the EISA bus sooner.
3-6
Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev. C
Print Spec Number: 491709-00 Rev C
Current Date: 9/1/93
Note
Host Adapter Interface Definitions
( ) IRQ 11
( ) IRQ 9
( ) IRQ 10
( ) IRQ 12
( ) IRQ 14
( ) IRQ 15
<Cancel=ESC>
(Page 3-6)
ECN Date: 9/14/93